Back to results
US 4,201,837 AGranted
Bonded amorphous metal electromagnetic components
AssigneeGeneral Electric Company
InventorJohn H. Lupinski
Life of this patent
Estimating the term…
Abstract
Magnetic cores suitable for use in transformers, generators and motors are provided. The core is formed of a laminate of layers of substantially amorphous metal laminae compressed to a rigid composite.
Claims5
A method for preparing a laminate composite for a magnetic core useful in a transformer or stator comprising the steps of
- assembling a plurality of thin polymer-coated metal ribbons of a magnetic metal in an applied magnetic field, said magnetic metal being at least 50 percent amorphous and having the composition represented by the formula,
- A.sub.x Z.sub.y,
- wherein A is one or more of Fe, Co, Ni, Mo, W, Cr, and V, Z is one or more of Si, C, B, P, Al, Sn, Sb, Ge, In, and Be, x is an atomic percentage of from 70-90, and y is an atomic percentage of from 30-10,
- said polymer-coated ribbons being disposed in a plurality of layers, each of said layers being composed of a plurality of said polymer-coated ribbons arranged with at least one edge of each polymer-coated ribbon contiguous with an edge of another polymer-coated ribbon and said layers being disposed relative to each other so that abutting edges in contiguous layers are covered by solid magnetic metal,
- simultaneously subjecting the polymer-coated ribbons so assembled to pressurization in excess of about 1000 psi and to heating to a temperature in excess of the annealing temperature and below the recrystallization temperature of said magnetic metal, and
- converting the annealed assembly of ribbons as required to convert said assembly into a shaped laminate suitable for construction of said magnetic core.
3 more elements
Dependencies are inferred from the claim text.